CN201308802Y - Freezing method gas dust removal dehumidification device - Google Patents
Freezing method gas dust removal dehumidification device Download PDFInfo
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- CN201308802Y CN201308802Y CNU2008202377040U CN200820237704U CN201308802Y CN 201308802 Y CN201308802 Y CN 201308802Y CN U2008202377040 U CNU2008202377040 U CN U2008202377040U CN 200820237704 U CN200820237704 U CN 200820237704U CN 201308802 Y CN201308802 Y CN 201308802Y
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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Abstract
The utility model relates to a dust removal dehumidification device of furnace top gas of a blast furnace, a converter or a COREX furnace for smelting, which is characterized in that the dust removal dehumidification device comprises a shell, wherein the two ends of the shell are equipped with a gas inlet and a gas outlet, and an inlet guide plate, a precooler, a self-circulation cooler, a first drain segment, a cooler, a second drain segment, a defogger, a rewarming heater and an outlet guide plate are sequentially arranged between the gas inlet and the gas outlet in the shell. Through using the dust removal dehumidification device, the discharge of dust can be reduced, and the pollution to the atmosphere is reduced. Energy can be recycled through recycling the heat of gas on the inlet and the cooling capacity of the gas on the outlet, thereby saving the energy consumption. The relative humidity of coal gas which is treated by the dust removal dehumidification device is reduced, condensed water which is produced during the transporting process in a pipeline is reduced, the corrosion action which is produced for the pipeline is reduced, and the safety is increased. The relative humidity of the coal gas is reduced, and the thermal value of the coal gas is increased.
Description
Technical field
The utility model relates to the dedusting dehumidification equipment that a kind of dust-laden contains humid gas, especially relates to a kind of dedusting dehumidification equipment of smelting blast furnace, converter or the COREX stove stock gas of usefulness.
Background technology
Blast furnace, converter or the COREX stove of ironmaking or steel-making usefulness can produce a large amount of coal gas when smelting, in coal gas of converter (LDG), blast furnace gas (BFG), the Corex producer gas (CrG) except that containing recycling fuel gas---the coal gas, also contain a large amount of water vapours and dust, dustiness and water capacity are all higher, as recycling, just need them to carry out the dedusting dehumidification treatments.Traditional method is to adopt wet dust removal (circumferential weld washing system, double-venturi washing system etc.), utilize the grit in the water droplet captured gas after atomizing, purified gas humidity and dustiness after wet dust removal decline to a great extent, temperature as clean coal gas of converter is about 70 ℃, and dustiness is 70～200mg/Nm
3, relative humidity is 100%, and such coal gas enters atmosphere after directly entering atmosphere or burning, and its contained dust can form the dust that can suck, and the dust concentration that can suck in the atmosphere is increased, and causes atmosphere pollution, influences the health of human body.In addition, because relative humidity is higher, in pipe conveying procedure, can produce a large amount of condensed waters, pipeline is produced corrosiveness, cause potential safety hazard through the coal gas after the wet dust removal.
The utility model content
The applicant is at above-mentioned problem, having carried out research improves, a kind of freezing dedusting dehumidification equipment is provided, can do further dedusting dehumidifying to the coal gas after the wet dust removal, to reduce the discharging of dust, minimizing is to the pollution of atmosphere, and the cold of drawing during the rewarming gas in heat of drawing during the pre-cold air of recycling import department and exit, the consumption of saving the energy.
In order to solve the problems of the technologies described above, the utility model adopts following technical scheme:
A kind of freezing dedusting dehumidification equipment, comprise housing, the two ends of housing are provided with gas feed and gas vent, import deflector, precooler, self-loopa cooling device, the first draining section, cooler, the second draining section, demister, rewarming heater and outlet deflector sequence unit in housing between gas feed and gas vent; Precooler is connected with cooling device by pipeline and water pump, and self-loopa cooling device is connected with the rewarming heater by pipeline and water circulating pump, and cooler is connected with refrigeration unit by pipeline and cooler water pump; The first draining section and the second draining section are respectively equipped with water leg, and water leg connects drainpipe and automatic water trap.
Further:
Also be provided with spray system, the spray head of spray system installs respectively near precooler, self-loopa cooling device, cooler, demister, is respectively precooler, self-loopa cooling device, cooler, demister work spray or flushing.
Described forecooler, self-loopa cooling device, cooler and rewarming heater adopt light pipe or finned tube exchanger structure.
Be connected with stable-pressure device in the connecting pipe of described self-loopa cooling device and rewarming heater.
Technique effect of the present utility model is:
1. after the utility model dedusting dehumidifying, can reduce the discharging of dust, reduce pollution atmosphere.
2. equipment of the present utility model, because self-loopa cooling device is connected with the rewarming heater by pipeline and water circulating pump, the transfer of heat of import department's gas is arrived the exit heated air, it is that gas is done precooling that the cold of exit gas is transferred to import department, no longer need cool off device and rewarming heater place utilizes external source to come precooling or heated air in self-loopa, it is recycling that the energy is obtained, and saved energy resource consumption.
3. coal gas is through processing of the present utility model, and its relative humidity reduces, and reduces the generation of condensed water in pipe conveying procedure, reduces the corrosiveness that pipeline is produced, and reduces potential safety hazard, improves security; Simultaneously, the reduction of coal gas relative humidity also makes the calorific value of coal gas improve, and helps user's use.
Description of drawings
Fig. 1 is a schematic diagram of the present utility model.
Fig. 2 is applied to the schematic diagram of coal gas of converter dedusting dehumidifying for the utility model.
Fig. 3 is applied to the schematic diagram of dedusting of blast furnace gas dehumidifying for the utility model.
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present utility model is described in further detail.
As shown in Figure 1, the utility model comprises housing 27, and the two ends of housing 27 are provided with gas feed 1 and gas vent 13, and gas feed 1 and gas vent 13 are connected with gas transmission pipeline respectively.Import deflector 2, precooler 3, self-loopa cooling device 4, the first draining section 5, cooler 6, the second draining section 7, demister 8, rewarming heater 9 and outlet deflector 12 sequence units in housing 27 between gas feed 1 and gas vent 13, above-mentioned precooler 3, self-loopa cooling device 4, cooler 6 and rewarming heater 9 all can adopt light pipe or finned tube exchanger structure, precooler 3 is connected with cooling device 25 by pipeline and water pump 26, and cooling device 25 is cooling tower or other cooling devices of prior art.Self-loopa cooling device 4 is connected with rewarming heater 9 by pipeline and water circulating pump 15, the heat that self-loopa cooling device 4 absorbs in the gas raises water temperature, water circulating pump 15 cools off hot water in the device 4 with self-loopa and pumps into rewarming heater 9 and be the heating of gas rewarming again, water temperature reduces, water after water circulating pump 15 will be lowered the temperature pumps into once more in the self-loopa cooling device 4 and does precooling for gas, like this, constantly the transfer of heat of import department's gas is arrived the exit heated air, it is that gas is done precooling that the cold of exit gas is transferred to import department, no longer need cool off device 4 and rewarming heater 9 places utilize external source to come precooling or heated air, save the energy effectively in self-loopa.In the present embodiment, be connected with stable-pressure device 14 in the connecting pipe of self-loopa cooling device 4 and rewarming heater 9, this stable-pressure device 14 is a prior art, is made up of air accumulator, air bag and air compressor machine, automatically regulate the pressure of recirculated water in the pipeline, reduce the pressure oscillation of water.Cooler 6 is connected with refrigeration unit 19 by pipeline and cooler water pump 20, and refrigeration unit 19 connects cooling device 25 by pipeline and recirculated cooling water pump 21, is refrigeration unit 19 heat radiations.The first draining section 5 and the second draining section 7 are respectively equipped with water leg (24,16), and water leg (24,16) connects drainpipe and automatic water trap (23,17).The first draining section 5 is a cavity, and its housing bottom has a water leg 24, and water leg 24 connects drainpipe and automatic water trap 23, and automatic water trap 23 enters gutter 22 with water; The second draining section 7 is a cavity, and its housing bottom has a water leg 16, and water leg 16 connects drainpipe and automatic water trap 17, and automatic water trap 17 enters gutter 18 with water.In the present embodiment, also be provided with spray system 11, be provided with spray water pump 10 in the pipeline of spray system 11, the spray head 1101,1102,1103,1104,1105 of spray system 11 installs respectively near precooler 3, self-loopa cooling device 4, cooler 6, demister 8, be respectively precooler 3, self-loopa cooling device 4, cooler 6, demister 8 work spray or flushings, under abnormal conditions, cooler, demister collection ash phenomenon take place, and can open spray system 11 hydroblasting precoolers 3, self-loopa cooling device 4, cooler 6, demister 8.
When the coal gas that contains a large amount of water vapours and dust that is producing when blast furnace, converter or COREX stove are being smelted is transported to gas feed 1 of the present utility model by pipeline, the gas temperature of this moment is higher, humidity and dustiness are all higher, importing 3 pairs of coal gas of precooler by import deflector 2 tentatively cools, make the water vapor in self-loopa cooling device 4 and rewarming heater 9 connecting pipes to prevent that gas temperature is too high, thereby make ducted pressure oscillation excessive, also can reduce the refrigerating capacity of refrigeration unit 19 simultaneously.Then, 4 pairs of coal gas of self-loopa cooling device further cool, in the process that cools of these two steps, part steam in the coal gas is that the nuclei of condensation are condensed into the globule with the dust in the coal gas, the integrated current of the globule flow into the first draining section 5, the condensed water that contains dust like this gathers in the water leg 24 of the first draining section, 5 bottoms, by automatic water trap 23 water is discharged to gutter 22.Coal gas is further cooled by cooler 6 again, make its temperature reach 8～15 ℃ by water at low temperature or the refrigerant cools coal gas that refrigeration unit 19 produces this moment, most water vapours in the coal gas are that the nuclei of condensation are condensed into the globule with the dust, accumulate current again and flow into the second draining section 7, the condensed water that contains dust gathers in the water leg 16 of the second draining section, 7 bottoms, by the automatic water trap 17 of the second draining section, 7 bottoms water is entered gutter 18.A large amount of water vapours and dust in the coal gas is removed at this moment, but still contain a large amount of fog in the coal gas, remove fog in the coal gas by demister 8, then by 9 pairs of coal gas heating of rewarming heater rewarming, reduce the relative humidity of coal gas, the relative humidity that makes coal gas drops to relative humidity less than 50% from 100%, and last coal gas is through outlet deflector 12 and export 13 and send into conveyance conduit.
Fig. 2 is applied to the embodiment of coal gas of converter dedusting dehumidifying for the utility model.The coal gas that contains a large amount of water vapours and dust that converter 28 produces, preliminary treatment through gasification cooling flue 29, saturated spray column 30 and Venturi tube 31, send into gas feed 1 of the present utility model by pipeline, the temperature of gas of this moment is about 70 ℃, and dustiness is 70～200mg/Nm
3Relative humidity is 100%, importing 3 pairs of coal gas of precooler by import deflector 2 tentatively cools, 4 pairs of coal gas of self-loopa cooling device further cool, through cooling of two steps, part steam in the gas is that the nuclei of condensation are condensed into the globule with the dust in the gas, and this moment, temperature of gas was about 30-40 ℃, and dustiness is 20～100mg/Nm
3, relative humidity is 100%; 6 pairs of coal gas of cooler further cool, make its temperature reach 8～15 ℃ by water at low temperature or the refrigerant cools coal gas that refrigeration unit 19 produces this moment, most water vapours in the coal gas are that the nuclei of condensation are condensed into the globule with the dust at this moment, and dustiness is reduced to 1～5mg/Nm
3Still contain a large amount of fog in the coal gas this moment, remove fog in the coal gas by demister 8, then by 9 pairs of coal gas heating of rewarming heater rewarming, make its temperature return to 20 ℃, and reduce the relative humidity of coal gas, the relative humidity that makes coal gas drops to relative humidity less than 50% from 100%, this moment coal gas dustiness 1～5mg/Nm
3, 10～15 ℃ of coal gas dew points, the condensate water that every mark cubic meter coal gas of converter produces in the above-mentioned processing procedure is 190g/Nm
3About, condensate flow is about 1000 times of weight of dust.Coal gas is sent into conveyance conduit through outlet deflector 12 and gas vent 13 then.Again through gas fan 32, silencer 33, by-passing valve 34, triple valve 35, diffuse chimney 38, water seal non-return valve 36, V-arrangement valve 37, send into gas chamber for qualified coal gas by pipeline, to underproof coal gas, directly diffuse by diffusing chimney 38.Coal gas of converter has reduced the discharging of polluting through processing of the present utility model; Because the decline of coal gas humidity improves the calorific value of coal gas, helps user's use; Because the decline of gas temperature increases the air capacity of gas chamber; The decline of coal gas humidity and the decline of dustiness also can reduce the energy resource consumption of gas fan 32, reduce the wearing and tearing of gas fan blade.
Fig. 3 is applied to the embodiment of dedusting of blast furnace gas dehumidifying for the utility model.The coal gas that contains a large amount of dusts that blast furnace 39 produces through the preliminary treatment of gravitational precipitator 40, spray column 41, Venturi tube 42, is sent into gas feed 1 of the present utility model by pipeline, and this moment, temperature of gas was about 70 ℃, and dustiness is 70～200mg/Nm
3, relative humidity is 100%, the dedusting dehumidification process of coal gas in freezing dedusting dehumidification equipment of the present utility model with on an embodiment identical, be not described in detail in this.Coal gas dehumidifies through dedusting of the present utility model, and its relative humidity is less than 50%, and dustiness is 1～5mg/Nm
3, temperature is 20～60 ℃, the coal gas of this moment can be sent into gas chamber or use for the user, also can be delivered to the TRT generating equipment and be used for generating, because the relative humidity of coal gas is lower, can improve its calorific value, can improve generating efficiency equally.
Claims (4)
1. freezing dedusting dehumidification equipment, it is characterized in that: comprise housing, the two ends of housing are provided with gas feed and gas vent, import deflector, precooler, self-loopa cooling device, the first draining section, cooler, the second draining section, demister, rewarming heater and outlet deflector sequence unit in housing between gas feed and gas vent; Precooler is connected with cooling device by pipeline and water pump, and self-loopa cooling device is connected with the rewarming heater by pipeline and water circulating pump, and cooler is connected with refrigeration unit by pipeline and cooler water pump; The first draining section and the second draining section are respectively equipped with water leg, and water leg connects drainpipe and automatic water trap.
2. according to the described freezing dedusting of claim 1 dehumidification equipment, it is characterized in that: also be provided with spray system, the spray head of spray system installs respectively near precooler, self-loopa cooling device, cooler, demister, is respectively precooler, self-loopa cooling device, cooler, demister work spray or flushing.
3. according to the described freezing dedusting of claim 1 dehumidification equipment, it is characterized in that: described forecooler, self-loopa cooling device, cooler and rewarming heater adopt light pipe or finned tube exchanger structure.
4. according to the described freezing dedusting of claim 1 dehumidification equipment, it is characterized in that: be connected with stable-pressure device in the connecting pipe of described self-loopa cooling device and rewarming heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202377040U CN201308802Y (en) | 2008-12-31 | 2008-12-31 | Freezing method gas dust removal dehumidification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202377040U CN201308802Y (en) | 2008-12-31 | 2008-12-31 | Freezing method gas dust removal dehumidification device |
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| Publication Number | Publication Date |
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| CN201308802Y true CN201308802Y (en) | 2009-09-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202377040U Expired - Fee Related CN201308802Y (en) | 2008-12-31 | 2008-12-31 | Freezing method gas dust removal dehumidification device |
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| CN (1) | CN201308802Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102942967A (en) * | 2012-12-10 | 2013-02-27 | 南京圣诺热管有限公司 | Blast furnace gas preprocessing method and device |
| CN104727843A (en) * | 2015-01-28 | 2015-06-24 | 中国矿业大学(北京) | Gas-liquid two-media cooling device for coal face of coal mine |
| CN108251594A (en) * | 2018-01-23 | 2018-07-06 | 上海云汇环保科技有限公司 | A kind of freezing dehumidification dust-extraction unit |
| CN109439828A (en) * | 2018-12-27 | 2019-03-08 | 上海欧骋冶金成套设备有限公司 | A kind of blast furnace stops wind flue gas processing device again |
| CN111686534A (en) * | 2020-06-08 | 2020-09-22 | 湖南沃工环境科技有限公司 | Circulation washing fast drying formula exhaust gas scrubbing tower |
| CN112745968A (en) * | 2021-02-02 | 2021-05-04 | 新疆八一钢铁股份有限公司 | Gas dehydration and dechlorination device for Ou metallurgical furnace |
| CN115418252A (en) * | 2022-09-06 | 2022-12-02 | 福建省江南冷却科技有限公司 | Coal gas cooling heater with good use effect |
-
2008
- 2008-12-31 CN CNU2008202377040U patent/CN201308802Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102942967A (en) * | 2012-12-10 | 2013-02-27 | 南京圣诺热管有限公司 | Blast furnace gas preprocessing method and device |
| CN104727843A (en) * | 2015-01-28 | 2015-06-24 | 中国矿业大学(北京) | Gas-liquid two-media cooling device for coal face of coal mine |
| CN108251594A (en) * | 2018-01-23 | 2018-07-06 | 上海云汇环保科技有限公司 | A kind of freezing dehumidification dust-extraction unit |
| CN109439828A (en) * | 2018-12-27 | 2019-03-08 | 上海欧骋冶金成套设备有限公司 | A kind of blast furnace stops wind flue gas processing device again |
| CN111686534A (en) * | 2020-06-08 | 2020-09-22 | 湖南沃工环境科技有限公司 | Circulation washing fast drying formula exhaust gas scrubbing tower |
| CN112745968A (en) * | 2021-02-02 | 2021-05-04 | 新疆八一钢铁股份有限公司 | Gas dehydration and dechlorination device for Ou metallurgical furnace |
| CN112745968B (en) * | 2021-02-02 | 2024-05-24 | 新疆八一钢铁股份有限公司 | Dewatering and dechlorinating device for gas of European smelting furnace |
| CN115418252A (en) * | 2022-09-06 | 2022-12-02 | 福建省江南冷却科技有限公司 | Coal gas cooling heater with good use effect |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090916 Termination date: 20171231 |